SB2010050702 - Out-of-bounds write in Linux kernel
Published: May 7, 2010
Security Bulletin ID
SB2010050702
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2010-1451)
The vulnerability allows a local user to manipulate data.
The TSB I-TLB load implementation in arch/sparc/kernel/tsb.S in the Linux kernel before 2.6.33 on the SPARC platform does not properly obtain the value of a certain _PAGE_EXEC_4U bit and consequently does not properly implement a non-executable stack, which makes it easier for context-dependent attackers to exploit stack-based buffer overflows via a crafted application.
Remediation
Install update from vendor's website.
References
- http://marc.info/?l=linux-sparc&m=126662159602378&w=2
- http://marc.info/?l=linux-sparc&m=126662196902830&w=2
- http://secunia.com/advisories/39830
- http://www.debian.org/security/2010/dsa-2053
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.33
- http://www.openwall.com/lists/oss-security/2010/02/24/1
- http://www.openwall.com/lists/oss-security/2010/05/05/2